Element, Compound, Mixture - 6th

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. Examples include oxygen (O), hydrogen (H), and gold (Au).

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together. Examples include water (H2O) and carbon dioxide (CO2).

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded. Examples include salad and air.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture that has a uniform composition throughout. An example is saltwater.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture where the components are not evenly distributed. An example is a fruit salad.

Front

Is air a homogeneous or heterogeneous mixture?

Back

Air is a homogeneous mixture because its components are evenly distributed.

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What is the difference between an element and a compound?

Back

An element is a single type of atom, while a compound is made up of two or more different types of atoms chemically bonded together.

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Can a mixture be separated into its components?

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Yes, mixtures can be separated into their individual components by physical means, such as filtration or evaporation.

Front

What is an example of a compound?

Back

An example of a compound is water (H2O), which is made of hydrogen and oxygen.

Front

What is an example of an element?

Back

An example of an element is gold (Au), which is a pure substance.